<template>
    <div>
        <h1>当前求和为： {{sum}}</h1>
        <h3>当前求和放大10倍为：{{bigSum}}</h3>
        <h3>我在{{school}}，学习{{subject}}</h3>

        <select v-model.number="n">
            <option value="1">1</option>
            <option value="2">2</option>
            <option value="3">3</option>
        </select>
        <button @click="increment(n)">+</button>
        <button @click="decrement(n)">-</button>
        <button @click="incrementOdd(n)">当前求和为奇数再加</button>
        <button @click="incrementWait(n)">等一等在加</button>
   </div>
</template>

<script>
    import {mapState,mapGetters, mapMutations, mapActions} from 'vuex'
    export default {
        name: 'Count',
        data() {
            return {
                n:1, //用户选择的数字
            }
        },
        computed: {
            ...mapState(['sum','school','subject']),

            ...mapGetters(['bigSum'])
        },
        methods: {
            // increment() {
            //     this.$store.commit('JIA',this.n)
            // },
            // decrement() {
            //     this.$store.commit('JIAN',this.n)
            // }, 

            //借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(对象写法)
            ...mapMutations({increment:'JIA',decrement:'JIAN'}),

            // incrementOdd() {
            //     this.$store.dispatch('jiaOdd',this.n)
            // }, 
            // incrementWait() {
            //     this.$store.dispatch('jiaWait',this.n)
            // },


            //借助mapActions生成的方法，方法中会调用dispatch去联系actions(对象写法)
            ...mapActions({incrementOdd:'jiaOdd',incrementWait:'jiaWait'})
            
            //借助mapActions生成对应的方法，方法中会调用dispatch去联系actions(数组写法)
            // ...mapActions(['jiaOdd','jiaWait'])
        },
        mounted() {
            // console.log('Count',this);
            const x = mapState({he:'sum',xuexiao:'school',xueke:'subject'})
            console.log(x);
        }
    }
</script>

<style lang="css"> 
    button {
        margin-left: 5px;
    }
</style>